26279985 has 16 divisors (see below), whose sum is σ = 42128064. Its totient is φ = 13989312.

The previous prime is 26279947. The next prime is 26279987. The reversal of 26279985 is 58997262.

It is not a de Polignac number, because 26279985 - 2¹⁰ = 26278961 is a prime.

It is a super-2 number, since 2×26279985² = 1381275223200450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (26279987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8454 + ... + 11136.

It is an arithmetic number, because the mean of its divisors is an integer number (2633004).

Almost surely, 2^26279985 is an apocalyptic number.

It is an amenable number.

26279985 is a deficient number, since it is larger than the sum of its proper divisors (15848079).

26279985 is a wasteful number, since it uses less digits than its factorization.

26279985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3344.

The product of its digits is 544320, while the sum is 48.

The square root of 26279985 is about 5126.4007841760. The cubic root of 26279985 is about 297.3092155303.

The spelling of 26279985 in words is "twenty-six million, two hundred seventy-nine thousand, nine hundred eighty-five".